Hydrotalcite originated Cu – Mg – Al, Co – Mg – Al and Cu – Co – Mg – Al oxide systems were tested as catalysts for the total oxidation of mono-carbon VOCs (methane, methanol, and formic acid). Both calcination tempera- ture of the hydrotalcite precursors as well as doping of the catalysts with potassium promoter in fl uenced their catalytic activity. Increased calcination temperature, which resulted in a decrease of the surface area of the samples and formation of the spinel phases, activated the Co – Mg – Al catalyst, while the opposite effect was observed for the Cu – Mg – Al and Cu – Co – Mg – Al catalysts. On the other hand doping of the catalysts with potassium promoter signi fi cantly activated the Cu – Mg – Al and Cu – Co – Mg – Al catalysts in the processes of methanol and formic acid conversion, while only slightly in fl uenced the catalytic performance of the Co – Mg – Al sample.